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MAX4889B, MAX4889C
2.5/5.0Gbps PCIe Passive Switch

High-Speed PCI Express Passive Switches Enable Gen II Switching with Low Insertion Loss and Superior Return Loss


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 180kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail


Description
The MAX4889B/MAX4889C high-speed passive switches route PCI Express® (PCIe) data between two possible destinations in desktop or notebook PCs. The MAX4889B/MAX4889C are quad double-pole/double-throw (4 x DPDT) switches ideal for switching four half lanes of PCIe data between two destinations. The MAX4889B/MAX4889C feature a single digital control input (SEL) to switch signal paths.

The MAX4889C is intended for use in systems (e.g., SAS) where both the input and output are capacitively coupled, and provides a 10µA (typ) source current and a 60kΩ (typ) internal biasing resistor to GND at the _OUT_ terminals.

The MAX4889B/MAX4889C are fully specified to operate from a single +3.3V (typ) power supply. Both devices are available in an industry-standard 3.5mm x 9.0mm, 42-pin TQFN package. These devices operate over the -40°C to +85°C extended temperature range.

An evaluation kit is available:  MAX4889BEVKIT  

Key Features   Applications/Uses
  • Single +3.3V Power-Supply Voltage
  • Support PCIe Gen I, Gen II Data Rates
  • Supports SAS I, SAS II, and SAS 6.0Gbps (MAX4889C)
  • Superior Return Loss Better than -14dB at 2.8GHz
  • Small 3.5mm x 9.0mm, 42-Pin TQFN Package
  • Industry-Standard Pinouts

 
  • Desktop PCs
  • Notebook PCs
  • Servers
  • Video Graphics Cards—SLI™ (Scaled Link Interface) and CrossFire™

    Key Specifications:  Switches and Multiplexers (Low Voltage)
    Part Number Protocol Functions Config. Channels Normal Position VSUPPLY (Single)
    (V)
    VSUPPLY (Single)
    (V)
    RON
    (Ω)
    BW
    (MHz)
    IL(OFF)
    (nA)
    Price
    min max max max See Notes
    MAX4889B  PCIe Switch 1:2 8 Bi-Directional 3 3.6 8.4 5000 1000 $1.50 @1k
    MAX4889C  SAS 6000 $1.50 @1k
    See All Switches and Multiplexers (Low Voltage) (160)

    Diagram
    MAX4889B, MAX4889C: Functional Diagram
    Functional Diagram

    Evaluation Kits
  • MAX4889BEVKIT

    Design Guides
  • Signal Routing & Protection (PDF)

    Reliability Reports
  • Reliability Report: MAX4889B.pdf MAX4889C.pdf
  • Show FIT data for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-4 of 4

    MAX4889B Free
    Sample
    Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4889BETO+  
    Active TQFN;42 pin;32.8 mm²
    Outline Drawing: 21-0181 (PDF)
    Land Pattern: 90-0079 (PDF)
    Use pkgcode/variation: T423590M+1*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4889BETO+T    
    Active TQFN;42 pin;32.8 mm²
    Outline Drawing: 21-0181 (PDF)
    Land Pattern: 90-0079 (PDF)
    Use pkgcode/variation: T423590M+1*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4889C Free
    Sample
    Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4889CETO+  
    Active TQFN;42 pin;32.8 mm²
    Outline Drawing: 21-0181 (PDF)
    Land Pattern: 90-0079 (PDF)
    Use pkgcode/variation: T423590M+1*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4889CETO+T    
    Active TQFN;42 pin;32.8 mm²
    Outline Drawing: 21-0181 (PDF)
    Land Pattern: 90-0079 (PDF)
    Use pkgcode/variation: T423590M+1*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  • New Product Press Release 2008-09-11 

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     Description 
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    Document Ref.: 19-4148; Rev 1; 2008-08-25
    This page last modified: 2009-08-17


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